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3 years ago

7

Can someone please help me with this I’m sincerely confused?

2 answers:

Burka [1]3 years ago

6 0

Answer: im sure its the 4th one

Explanation:

77julia77 [94]3 years ago

4 0

Answer:

the fourth one

Explanation:

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Two protons are 1 × 10−10 m apart (about one atomic radius). Which interaction between two protons is stronger, the gravitationa

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4 years ago

Whats is the definition of Parallel Circuit

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A parallel circuit is one in which there's a place where the flow of current
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3 years ago

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A 56-kg skater initially at rest throws a 5.0-kg medicine ball horizontally to the left. Suppose the ball is accelerated through

aniked [119]

Answer:

$a_2=24.5\ \text{m/s}^2$ towards right

$a_1=2.1875\ \text{m/s}^2$ towards left

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$m_2$ = Mass of ball = 5 kg

v = Final velocity of ball = 7 m/s

u = Initial velocity of ball = 0

s = Distance the ball moved in the hand of the skater = 1 m

Moving left is considered and moving right is considered positive.

From kinematic equations of motion we have

$v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{7^2-0^2}{2\times 1}\\\Rightarrow a=24.5\ \text{m/s}^2$

So, the ball will move towards right with a magnitude of acceleration $a_2=24.5\ \text{m/s}^2$ .

The force on the ball will be

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The reaction force on the skater will be equal to the force on the ball but will have opposite direction.

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4 0

3 years ago

Okay okay two questions heh

tensa zangetsu [6.8K]

The answer for question 2 i guess it’s c

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3 years ago

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